Adding-machine.



J. P. HARRISON.

ADDING MACHINE.

APPLICATION FILED MAYSI, 1905.

latented Jan. 16, 1912.

3 SHEETS-SHEET 2.

520er? or;

JIP. HARRISON.

ADDING MACHINE.-

APPLICATION FILED MAYSI, 1905.

Patented J an. 16, 1912.

3 SHEETS-SHEET 3.

j l 'UNITED sTaTEs PATENT OFFICE-" JOHN P. HARRISON, 'OF LUDLOW, KENTUCKY, ASSIGNOR T0 BURROUGHS ADDING MACHINE COMPANY, OF DETROIT, MICHIGAN, A. CORPORATION OF llVIICI-IIGLIT.`

'ADDING-MACHINE.

`Specification of Letters Patent.

and list individual items, and also to printl 'a `total or footing of such items at the will of thel operator, which type of machine is exemplitied by the well known Burroughs adding machine7 illustrated. and described in the lVilliam S. Burroughs Patents Nos.

j v- 12th, 189s.

504,963 and 505,078, issued on September The objectxot' my invention is to provide novel, simple and etiicient mechanism for automatically printing a character to show whether-the machine was in a clear condition when a list of items was started, or, in other Words, whether or notithe adding Wheels were set at zero before suchA list was commenced. y c

For the sake of affording a clear understanding` of my invention, I 4have chosento describe and illustrate it in connection with the well 'known Burroughs adding ma chine, to which my intention may be ap plied vas an iin] novement or at-tachinent without material alteration of the old parts thereof, but it.\vill be understood that my improvement is not to be limited in its ap-. plication to this particular type of machine, but that it may be applied and used in connection. with machines of the. saine/general type and used for the same general purposes.

I In the drawings Figure 1 is a sectional elevation of a' Burroughs adding machine with my improvement incorporated therein, vthe section being taken just inside the left hand side traine; Fig. 2 a fullv sized scctional elevation of the various parts of my invention, together with certain .parts of the Burroughs-adding machine which are most concerned inthe operation, thereof.;

ofthe machine; Fig.. 3*? an elevation kof the Fig. 3.a full sized detail of a lever and 'its' type end of such typeplate'; Fig. 4 sized detail of the same parts'"-as in Fig. 3, but shown in full lines in a different-'position from either the position shown' in y"full or dotted lines in sait1I figure; and ,'F igt a full sized plan view o1' the lower letto-hand' I corner of the Burroughs adding machine keyboard partly brokenI away to show-*the detail of the operating connections which I use between my attachment "and vcertain parts of the Burroughs machine. Inasmuch as the Burroughs adding 'inachine is ivell known as to lts general construction andmode of `operatiom'only those ai fuir Patented Jan. 16,191.2.

parts thereof whichare more or less directly concerned in the operation of my inventionneed be described.

,My inventionrelates broadly tomeans for automatically,printing ya 'suitable character for designating the fact: that themachine Vwas' in clear condition when thelist 'was' started and the first item printed, 7such means, in the present instance,l being adapted and arranged to cause the printing of such desigiiatingcharacter at 'the time `lof, and as an incideiit'tm the printing ofthe first item. vSaid means are thus operativel only when the vfirst. item is printed and are rendered inoperative and thereby prevented from .prin/ting the designating charac-ter so y long as an item remains in, the machine and also bv preference when the machine is given lank-operations While inclear condition. v i i According to the present and' herein illustrated embodiment of my invention, I take advantagev of the clear si'gnaldevice vofthe Burroughs machine (see Patent No. 983,009, issued January 31, 1911). for directly controlling said automatic means and -rendering the lattei` inoperative' wheneverjthe signal ther take advantage of portions of the?. mechanism of thel WellA known star attach ment ofi a Burroughs niachine,`which arrangedto print a star l,or other character vto' designate totals (both vgrand and subftotals) as hereinafterdescribed. However,- it will.'

be understood thatfinyP invention vnotxtjo-` be limitedy iny its broader aspect as set-ith consti-mc y p u* bodinient-in connection with the'y signal deviceiandistar attachment or either ott-them l:ss

The said signal device and the star attach- 'nient will, therefore, be described to such extent as to atl'ord an understanding of my invention. I

Referring first to the clear signal device of a Burroughs machin-e, as shown in Figs. 1, 2 ando, such signal comprises a signal arm 1210 arranged to rock on a cross shaft 1400 and under the control of the key mechanism and also of the clearing and totalizing mechanism of the machine. The upper end ofthe signal arm is operatively connected to a link or connection 1212 extending between the keyboard plates 212 and 213 and itself in turn operatively connected with an oscillating signal`1215, which is arranged to oscillate within the case 1214 on the ke 'board and provided with two dist' uisha le portions, one marked Clear an the other provided with a contrasting color such as red, for indicating non-clear or danger.

The signal arm is normally held with a yielding pressure toward the rear as to its upper end above its pivotal point 1400 but is restrained by the interference of a latch 1211 which engages a pin or stud 1250 on the signal arm. lVhenever any one of the number or value keys 291 on the keyboard is depressed, the bail, of which'the part 424 forms a side arm, as seen in Fig. 1, is rocked rearwardly by a depending lip of the keydetent strip or bar 214, as in the well known Burroughs machine, with the result that a pin or stud 1259 on the side armfl24 contacts with and releases the latch 1211 from its described engagement and permits such signal arm to subsequently move from its normal or clear position which is indicated in full lines in Figs. 1 and 2 to the non-clear position which is indicated in dotted lines in said figures, such movement being caused by the tension of the spring 1280 when the latch 1211 has not only been thus displaced, but a second interference,

resently to be described, has been removed.

he latter comprises an arm 1216 pivoted upon the shaft 904 which, as usual. in a Burroughs machine, has a rocking movement in the operation of the machine through the medium of the arm 922, the link 918i, and the rocking arm 813, which is mounted upon the rocking shaft 800 of the machine. In the clear condition of the parts of the signal device, the arm 1216 is positioned directly in the path of a stud 1250", projecting inwardly from the signal arm, and such arm is prevented from rocking to non-clear position so long as the arm 1216 is in said position, even though the latch 1211,. has been lifted. However, during a full operation of the machine, the arm 1216 will move upwardly at the end of the forward 'stroke of the operating handle of the machine and consequent rearward movement of the arm 813 (by reason of the engagement of a stud on said arm with the end of a slot in the link 918i), and will. return toa posit-ion in front of the stud 1250 as the handle starts on its rearward stroke (a spring 981 drawing the arm 922 forward) in case that no amount or item has been set up on the keyboard but if, on the other hand, an item has been set up and the latch 1211 thereby released, the signal arm is permitted to move to non-clear position. The arm 1210 remains in its upper position resting upon the stud 1250 against the tension of its spring 981 until the familiar total key 265 is operated or depressed, and the regular pitman 914 thereby lowered through the medium of the usual connecting link 911 when a stud 1255 on the said pitman pnt in .a position to cooperate with the bell crank lever 1213 pivoted on the lower end of the signal arm 1210, so that. during the subsequent and rearward movement of the itnian the signal arm will be moved or shi vted rearwardly below the pivotal pointy 1400, thereby permitting the arm 1216 to be rocked to its normal position in front of the stud 1250"L and restoring the signal arm to its normal position so as to be engaged by the latch 1211. The bell crank lever 1212i is connected by a spring '1.282 with the signal arm 1210, whereby one arm of said bell crank is held normally in line with said signal arm with the other arm` of said bell crank lying substantially parallel with the pitman 914. When the latter is lowered by depression of the total key this spring will yield to the pressure of the stud 1255 against the last mentioned arm of said bell crank, but when the pitman moves forward and this stud clears `the end of the bell crank the latter is restored to its normal position by the spring. lVhen the signal arm is in the position shown in solid lines in Figs. 1 and 2, thc visual signal 1215 indicates clear but utter an item has been inserted in the machine, the signal arm occupies the position indicated in dotted lines in said figures, at which time the signal exhibits its red portion, so as to iiulicate danger or nonclear', or in other words, thatdhere is an accumulation or an amount in the machine. The signal will remain in said nou-clear posit-ion until the clearing mechanism of the machine has been operated and the inachine is clear or set at zero position. lt will be understood that this clear signal device docs noty constitute. per sc, a part of my invention, but that the same is utilized for operating encontrolling the parts constituting my invention. The. taking 'of a sub-total does not result in changing the signal, for the reason that the total key is released and allowed to rise to its normal position before the operatinghandle swings rearwardly. y""'Ihe-svtud 1251 is thus 'removed `from 'coperative relation" with the bell crank -1213 before 4lthe pitman @9i/i moves rearwardly. Consequently the taking of a 2: Subtotal does not produce any movement of y'the-"signal arm 1210and the red portion of the Asignal remains in vieux.

Referringncx't to the mechanism for au-v f tmatically-printing a star or other desigmating' Vcharacter opposite' a `total oi" subtotal to distinguish it from an .ordinary listed item, in the regular 'Burroughs ma*- ,chi-ne having this star-:attachment- (see Macauley patent 23A74, issued Ju.ne'12 31906), there is a' type carrier. o'r bar always `in position to print from the star type, .but

" the; hammer provided .to strike vthe type plate inthe. printing operationisvarranged ftofbe .tripped and allowed to deliver its blow only when the total key isdep'ressed. lThis Ahainm'er. is similar to the usual hammers j715 (one of which appears in Fig. 1)- co;`

y `operating with theseries of movable' type corresponding to -the differentdenominations on the keyboard, the-extra 'hammer ing, arranged at the right' hand side of 'lm series and jhence notb'rought to view fg. 1 buto'perated in the sainemanner ssueh series lof-bail'niners sor that a.descripi .tionjof any one ofthe latter will be equiva.

letjto describing the extrahammer so far ast general arrangementV isconcerned. Asshvvn 1n Fig. 2, eachhammer lsprowith acam slot adapted vto receive a'ntlsfriction' roller 741 mounted on the hammer driving lever 716 which-lever is l impelled by the spring 780 in a rearward direct-ion, tending to 'throw its hammer 715 i' rearwardly againstits movable type pl-ate. However, this driver is restrained'. against A suchvmovement by its catch 717 until such time as the latter is rocked to release the driver through the medium of the controli ling pawl 718. Asis Well known and dis-' closed in said Burroughs andMacauley patents, the controlling pawl of each type see! tor bar- 611 is raised, duringan operation of the machine, from operative relationship withits catch 717, by contact against the ,inclined edge or cam surface G11c of its type bar, in case such barV represents or corf responds toA a denomination 1n which no key been operated. But in case one of `the ,keys of such denomination has been operated, and the regular 4type bar 611, in

it. the operation of the' machine, is raised a distance corresponding to the value of the `lkey operated, then the= controlling pawl 718 is leftl in position to release its catch 717 in the operation of the machine,'and thereby permit the driver 716 to 'operateits bami liner 715. As. is also well known being dis- ;/closed in said patents, these catches 717l aie provided with projections or lugs extending toward the fright or toward the` catch `of g .ley

-the next lower, denomination for theApur'- 'p'ose of tripping the hammers correspond# ing to those denominations in which no keys have beenoperated, thereby causing a printingof ciphers in th-o'se particular rows or denominations.` `However, there will `be no suchprojection or lug extending over the extra hammer catch -which is displaced only through' the `mediuml of the total devices. The extra hammer provided in the .regular Burroughs adding machine to cooperate-Y wit'h ,the star attachment is controlled in a somewhat similar manner, but through the medium of an arm having a cam surface 4similar tothe surface 611, which arm is `under the control; of the' totalizing and clearing mechanisms le. g. in said Macaupatent. Normally, this arinis in pos1- tion to contact the pawl 718 and thereby "prevent the operation of theextrahammer, but in' the totalizing joperatiomthat is when the total'key or button is depressed, vif themachine employs suchspecial key, thefarm- .is swung-.away from a position of interference with the pawl 718, withl-the' result that the extra hammerwill be caused to operate and deliver itsblow against the extra type and thereby lprint the .starfor' other suitable character in connection with,

and as an incident to,l the operation of takving a total, either-a, `grand tot-al orasub? total. x ,e

The foregoing is'descriptive of thev regir lar Burroughs machine andthe particular features described form, per se, no part of my'invention but are, however, more or less concerned in the operation .of the parts' or devices constituting my invention according' to the. herein described and illustrated i type plate, the same being the stai', but in order to Lake advantage of the hammer mechanism provided for such type plate (318, I provide the latter with the additional character herein marked (31S-`,1*`ig. Sia, for the purpose of designating the clear condition of the machine. lIn thepresent Y instance, this character is c although any other suitable designating character may be employed, such character being carried at.

the lower partandthe star at the upper part of the, extra type plate.`4 Furthermore, the extra type plate which has heretoforebeen employed in the regular star attachment of a Burroughs machine in a fixed position as regards vertical,movement is, according'to. the` present embodiment ofmy invention,

f a vertical plane .so as to present one or the other of its type to the hammer tor printing purposes, in this respect somewhat reseml bling the type bar ol the construction shown in said Maeauley patent for printing a ditferent character to designate a sub-total from that which designates` a grand total. This type bar (3111 is normally held in its lowerinost position, with neither type in printing position, against the tension olf a spring QSO secured thereto at its lower end and aty its upper end to a plate lfl suspended from the cross shaft or rod 207, as

indicated in Figs. and el. lVlien the type bar (3119, is in its normal position, indicated in full lines in Fig. 3, its earn edge Gille is presented to its` hammer controlling pawl 71S, so that in the operation of the machine said pawl will be rendered inoperative to disengage the eateh 717 from the hammer driver, the saine as with hammerdrivers oit' unoperated banks oi' keys in a regular Burroughs machine. Whenever a total is taken, however, certain restraining devices, hereinafter described are displayed and the type bar raised by its spring to the tall line position, Fig. il, bringing the total type or star to the printing line. This upward movement of the type bar suilieient to remove its cam surface (311),L from the path ot the tail of the pawl 71S in the ensuing operation of the machine, and conseqnt-intly itC hannner will be aiiftuated for the purpose oi" .iti-tiring the extra type plate Ulti, with i.

the result. that the star will he printed to distinguish the total from the individual items. The movement of the type bar is also under the control oit an arm (32T secured to the roch shaft .300 and provided with a pin or stud 603i arranged to contact the end of the type bar extended forward ot the shaft (300. Vl`his arm t has an oscillatingr movement during each .stroke of the handle or iin operating- 4hait of the machine, but under normal conditions such arm in the position shown in lnll lines in lfig. 3, with the stud 6G21V holdingr the forward end of the type bar in elevated position. However,

when the handle is pulled lo an extreme tot'u ward position the shaft GCO rocked in a cloeltwise direction to the position indicated in Fig. Ll, thereby permitting the spring,"`

QSO to elevate the type bar. When the parts ot' the machine are restored to normal position, the arm 62T will contaet the type bar and restore it to the position shown in full lines in Fig; 3, it being' desirable that the type har reinain in this position with both types below the printing line when the machine is normal so as to avoid any posi sihility of the type blurring the paper when l the latter ieiiinserted around the platen.

l 'lf he upward movement oi the 'type bar is limited and the star type brought to the g proper printing point hy the Contact of a shoulder or projection 611% onr said bar l against the lower end of a swinging arm 229, as seen in Fig. il, said arm being secured at its upper end to a. rock shaft 206%, which is in turn under the control of the total'- izinr and clearing mechanism and also under the control ot the signal device, with the result that when the totalizing mechanism is operated the arm 229 will be rocked troni its normal position, shown in full lines in Fig. 3, to the position shown in full lines in Fig. l and a star will be printed automatically and as an incident to the printing of the total, Moreover, the Construction and arrangement such that the arm 229, when permitted by the signal device, may he rocked to the dotted line lposition shown in Fig. 3, at which time the type bar is permitted to be raised to a higher position'than when a total is taken, with the result that the type 61S for designating clear l Condition is brought to the printing point or line, as seen in dotted lines in Fig. 3, this upward movement of the type bar taking place at the first movement of the operating handle or main shaft of the machine and after the pin or stud 663i has been moved downwardly, as shown in dotted lines in Fig. 3.

The total key 265 is as usual mounted upon the opstanding front end of a bell crank lever QQTL secured to a rock shaft 204 and in the present` instance the depending t arm of said bell crank has a slot-andpin l connection with' the forward end of a link Q26, l whose rear end is pivotally connected by a screw-stud 250iwith the lower end of a depending arm of a bell crank 227-1- seeured to the rock shaft 22635, from which the depending arm Q29 depends. The rearward moveV ment of these parts is limited hy Contact of a projection on the arm 227i against the shaft S01, but in a regular itemizing operation of the machine no. rearward movement at all ean take place, the construction here shown includirnbr the regular hook 625 of a Burroughs machine secured to the rock 5 shaft (300 and arranged to 'engage behind machine when said stud is in the position shown in the forward dotted lines in Fig. 2. the handle if; pulled forward or the main operating 'shaft rocked forwardly, the hook- 325 rises to the dotted line osition shown in said figure. As the hand e or the main operating shaft of the machine is restored to normal position the hook 625 is likewise restored to its normal position shown in full lines in Fig /L below the stud 250i. The upper end of the hook is rounded as Shown the stud 2501- in such an operationof the i Jamming action against the'stu'd it may in- Sure Athe proper'positioningof the partsI at theextreme rearward or forward limit of movement, as the case may he; also' fora purhereinafter described. A springV 286 conr neeted vat one end with the link 226 and atf lllthel other with the hell crank 22.7 tends to "'"draw the ftwo together.

As' hereinbefore statedI takeadvantage of the movements of the signa kfdeviee' tier thekpurpose of controlling theaotion ofmy automatic attachment, and t th'is'end in the present instance, I provide' an operating by the dotted lines in said ligure, sothatby a k connection between the signal arm 1210 and' the-bell crank arm 227?.A As seenfin Figs. 1-1,.2.and 5, the controlling connection eonr prises a sliding bar `2129,- adapted yto he` `"moved forward and ha'ck on the under side j. gojof the lower keyboard plate 212, hy means of the Signal m1111210, whose upper end is passedjthrough an, opening in the forward 'end of? said sliding bar which is held in placeby means of two shouldered "screws,

425p21.2%'engaging,slots therein. In `the lower keyboard plate 212 I have provided a slot',

` 212, Fig. 5,'and in the har 212]; a similar rslot v212c shown in dotted lines, Fig. 5; When the' m'aeliine is in a eleareondition, that is, set at zero, these slots 212h and 21.2" will he out of alinement as' shown in li`ig.-5,' but when an item has heen put into the ma-.

4, and the machine is thercforein a noncleareondition har`2l2}, }vill he slid rear-` 3.5 wardly Zuntil suoli slots 212bv and 212011. actly register. I p11-Ovidel the slotsy for the proper control ot' the bell crank '22715, Figs.

` 1.` and 2, whose upper end has the sau-reni "mensionsas the slots-andmaypassthlfi; h 40 them when they register'with" each o'jlnir. It will .he noted'however thatfwhen the slid.. ing har 212),A is in the .elear' position .sh-own in Fig. 5, also hy full lines, Figs.v l and 2, the slot 212 is blocked or closed hy y aportionotl the sliding har 212?,-rearwardly beyond itsown slot 212, therehy prevention` lthe holt erank'2-27?, Vtrom rising beyond the position shown .in :ull lines, Figs.A l, and 2. VHowever, when the sliding har 21.2 is in '50. non-pelear position, as indieated in the dotted lines in said figlires the slots 212b and 212c register, 'and the hell crank may enter and y-pass throughsaid slots, talting up the positionf'shown in dotted lines in Figs. l and 2. i. .lt will he noted that when the totai -key 265` depressed the hell crank 227'?lr is Arocked to.the last dotted line position to th'e leftin Fi 2, the movement being trans- 'mitted through the hellerank 227 and link 226and lim iled hy the shaft 801,. In Fig. 2

the hell crank 227?, is shown in two dotted positions,."hut in the oase just referred ,to vwl'iere the-.totalkey, entirely depressed e rank willhe in the rearward dotagainst the shaft 801. ,The swinging` arm 229 will thus he carried to its rearmost position so that its lower end will stand above the shoulder Gill ofthe type har G11-1L, as' indicated in Fig. l, with the result that just aiter the machine has started said type har rises" from the, dotted line position in said ligure to the full line position, wherein its total type or star at the ininting' line. This movement of the special type bar to its upper iosition as to its rearward cud rcmoves he eam surface Gill 'from itsposit* tion 'ot' interference with' the hammer conl trolling pawl 71S, with Athe result that its hammer permitted to vhe tripped and driven against the type plate on the special or extra type har. Thus a star or other designating charaeter may he printed to the right ofthe amount representing; the total, so that the total may he distinguished from. the individual items.

When the machine is in clear condition the signal arm i210 occupies theA forward full line position shown in Figs] and 2.l at 'which time the two slots ,2121) and2l2c are out of register, with the result that the bell 1 eranlrarm 227-1l is held to its depresse'dfnll line position shownin said figures and the mit the special type'har to rise to its highest position shown by dotted lines in Fig. 3, bringing' the type 6.18ct() the printing'line. .Thus the oharaetta' indicating clear wouldhe printed every ltime the machine was operated atteithe taking of a total, so long' as no amount keys were depressed or inother words as an ineident to every blank operation of the maehiue. lt is desirable, hmvever, to print this designatingr character only as an incident to the introduction of the `Erst item into a .eleared maehine and -to aec'olnplish this result, l have provided a pin 763 on thespeeial type plate hammer and have out a notch 'llin the firsthammer to the leftI ot this special or extra hammer, thereby making it impossible for the extra? hammer,r which is therefore the last hammer tothe rinht` to deliver a blow unl-ess` one` of the regular hammers .is also tripped?4 or operated. Figs. .l and 2. Tt will' he understood that. -the hammer provided with "the notch is the last regular hammer of the machine on the ri `eht. while the-special hammer, pro.

vided with the pin, is the Ihammer concerned position" with lits projection resting the result that no printing, either ot the star i or the c takes place..

Describing the operation of 'the machine, and starting with the same clear l condition, the parts occupy the relative positions shown in full lines in Figs. 1 and 2,

5 the signal arm 1210 being in its normal or clear position and the bell crank 227i being in its intermediate position abutting the slide bar212, the slots 212h and 212C being out of alinement. The depending arm 229 stands just forward of the shoulder 611;}- on the special type bar, and so when an item is now set up on the keyboard and the main shaftof the machine operated by handv or otherwise, this special type bar will rise to the position shown in dotted lines in Fig. 3 and about the same time the book 625 will start on its upward movement and by the action of its rounded end against the stud 25011 will force `the lower arm of the bell crank 227i slightly to the rear against the tension of the spring 286, thereby causing the forwardfa'rm of the bell crank 227i to slightly descend," thus relieving the sliding" barf212 from the friction incident to thepressure of said bell crank thereagainst. During the still further movement of the main operating shaft of the machine, that is, during the further forward movement of the handle when themachine is manually operated, the regular hammers will be tripped, there? printing the amount set up on the keyboar and, as all the regular hammers to the right of an amount or fi re must be tripped, as before described, tg: last regular hammer,

which is the one having a notch to coperate with the pin 763, will be tripped and allowed to deliver its blow. This action removes the interference to pin 763 and as the special hammer is tri ped b reason of the removal of the special) type bar from a position of interference with its pawl 718, such special hammer will be allowed to deliver its blow, thereby printing a c at. the right hand of the amount, this being the designatin character to show that the machine was c ear. when the item or amount was put into the machine. About the same timd that the. printing action is taking place, th signal arm 1210 changes its position, co ling to rest in the osition shown in dotted lines in Figs. 1 an 2 and. carrying with it the sliding bar 212i and thereby bringing the slot 212c into register with the slot 212".

B5 All (if this occurs about the end of the for-- ward stroke of the operating handle (if a handle is employed). The bell crank 227i remains in its rearward position during the return strolr-` of the handle until the hook 6 625, descending below the stud 250%, allows the stud and thereby said bell crank to come to the forward posit-ion shown in dotted lines in Fig. 2, this result, of course, being made ossible by signal arm 1210, which has place the bar 212i in such position that its slot 212c will coincide with slot 212", there- -by allowing the up er end of the bell crank 2271 Ato pass throng 1 the slots to the osition shown in dotted lines in Fig. 2. ith the return of the handle to normal position, the special type bar is carried to its lowermost pos1tion, and the bell crank 227% carries with it the swinging arm or dentent 229 to the position shown in solid lines in Fifr. 3. During subsequent listing operations o? the machine, the specialtype bar 611i will consequently have no movement whatsoever, being held in inoperative position by this arm 229. The cam surface G11-l-c will therefore render its controlling pawl 718 inoperative during the listing of all subsequent items, and its special hammer will therefore remain at rest. [bese parts will remain in this relative arrangement with respect to each other until a. total or sub-total is taken. In taking a grand total, the total key or button 265 is depressed, and the swinging arm or detent 229 brought to the position shown in full lines in Fig. 4, so as tostop or limit the upward movement of the special type bar 'to a position for printing the star, as already described.

In taking a sub-total the action is the same durin the forward stroke of the operating handlla or lever as for taking a grand total, but the' .total key is released when the handle isv nt the end of its forward stroke and is permitted to return to its normal or elevated position. At this time, the hook 100 '625 is inl the position shown in dotted lines in Fig. 2, and the stud 250i is thereby retained in vits rearward posit-ion, holding the bell crank 227110 the position shown in full lines in said figure. The slot-andpin connection between the link 226 and in the bell crank 227 permits the latter t0 return to normal independently of said link and the bell crank 227i, theA llsui'll employed in the Burrou hs machine to li the total key being su cently strong to overpower the sprin 286. When the tota'l key 265- is thus re eased at the forward stroke of the operating 'handle to obtain a sub-total, the si nal arm remains injthe IIL dotted line position of Fig. 2, thereby lx1-i lowing the slots 212h and 212 to rellin in register. This is due to the fact that the pitman 914 does not maintain its depressed position for'the back stroke and he its pin or stud 1255 does not act agaif't the part 1213 to rock said signal arm. As soon. as the handle reaches the end of the return stroke and the hook 625 is thereby carried below the stud 2501, the bell crank 227 it'. will therefore again return to the forwa position shown in dotted lines, Fig. 2, its upper end re'enterng the slots 212 and 212" and the swinging arm or detent 229 be returned to the position shown in full lines 1M Vvent its pawl 71.8 from tripping thespecial hammer. ,lt is therefore plain thata designating character such the ,character C will only be printed opposite or at the right hand side ct' the firstr item put into the machine after .the latter has beencleared and,

when'the visual signal is exhibiting the word Clear lf the machine is in a noncl'carcondition, the signal showing red, and

anitem is-,put into the machine, there will be no e printed opposite it. vNeither will the. printing of asini-total result in the fol-l lowing item 'being printed with the t c As the'v signal device gives a visual indication or proef to the operator that. the machine isr clear, so my invention affords a printed -indijcation or proof at the beginning of' ever7 new column or list 'et figi'ires that the machine was clca-r whenjsuch column was comu'ielnced.A Foi" the purpose of affording a. clear .eoinprcl'iei'isioii of the results obtained by a machine equipped withmy 4in- 'vent-ion, there is shown below. a sainple'ot the Work from such a machine.

2. 30C fi. 20 8. 925

The. designating character opposite the tiifst itein $2.30 is the printed proof that the machine was clear when this amount was set np on the keyboard'and pnt inte the machine `While the.` star opposite 9524.84 (which, in this example, is a sub-total) indicates that this amount is the tot-al tot the' several m'eceding individual items. f ft. will be noted that the $3.22 which is tle tii'st item after the subtotal was taken, ias no de'sigi'iating clmi'acter-c, witlrthe result that ifthe sheet ot paper shouldbe 4torn oil" 'ust above the item, removingthe siibftotal,

the first item, as theoperator would be informed, by the absence of the 'desigi'iating character, that there was an amountin the machine at the time ot` th'e insertion of that item,$ll.2. The machine is thus capablev of: automatically".printing a character in een neetion with the first item as proof of the ifactv' that the machine" was clear when such item was put intothe machine, iii addition to Which the machine' is capable, as

character, andnieans coperating iviths'a;

the 'machine after clearing but pre/vient was clear when first item of a column mechanisincf the machine, ifspecral print-. ing mechanism that the machine-was clear iuwlien the fir'St i item of a .column or list was printed, siiidjj,v

heretofore, -in the regiil'ar Burroughs 'maichine, of indicating totals aiidsiib-totalsf 1. In an' adding rnachine, thecombinaf, tion with the clearing, printing, and addingqo, mechanisnis t. heieof,'of mechanism for autr v maticaliy printing in associationv rwith 4`the f first item a suitable character to indicate' the tact that the machine AWas ',clea11" .when such item was printed, and meansfor reni' 7,5. dering the latter mechanism inoperative eX- ceptwhen the machinei's clear and the: firstitein is pnt into the machine'. .j

Q. In an adding machine', the combinationl with theclearing,' printing, and iiig mechanisms thereof, of a'special-.type fb' or, carrier bearing a distinguishing ty type-bar for causing said charactervtd'fbe printed wl'iencver the machineis operated t'or the printing ot the first-itein pntinto/ ing printing of such character atwall dther times; substantially1 as described. 3. ln anadding maehine,`the combination with `the clearing, printing, and'nadding mechanisms thereoof special mechanism,v for automatically printing a suitabl'echarlaeter to designate the fact-that the machine or. list was prin ted, .ind means for prevent; `ing action ci said special mechanism eXce'pt in conjunction with the printing by the'reg, nlar printing mechanism of thefirst item printed after clearing of the machine.;l siibstantialtf as described.

4;' In an adding machine,v the ycotnhina'-A tion, with the .clearing mechanism, the addy' ing mechanism, and the ngiilar ,pi"inting 'i for automatically printing., ai suitable character to designate the'factf special Aprinting `mechanism` being under theVA control ot the regalar printing mechanism;`

'substantially as described.

In an `adding i'iiaehiiiii.''theH combina;-A tien, with the clearing mechanism, the adding mechanism, and the regular printing *11s mechanism of the inaehine,'of special print-v as described.

7. In an adding machine, the combination with the clearing mechanism, the adding -mechanism, and the regular printing mechanism of the machine, and with the hammers of the latter mechanism, of special printing mechanism comprising a movable type bar or carrier bearing a suitable designating character, a special hammer for forcing the type of said bar against the platen and con trolled by one ot the outermost hainmersof the regular printing mechanism and pre, vented thereby from act-ion except when the` regular printing mechanism is operated; substantially as described.

8. In a. machine of the character deL scribed, the combination with the accumulating. item and total printing devices, ot

a first-item designating type, a hammer for.

the same, a catch to hold the hammer retracted, and means controlled by the totalprinting devices for displacing said catch, with provisions for controlling the hammer action by the item-printing devices.

9. In a machine of the character described, the combination withthe accumulating, item and tot-al printing devices, of a first-item designating typo, a hammer for the same, a catch to hold the hammer retracted, a. vibrating member actuated in each totalizing operation, and a catch-controlling member itself controlled by said vibrating member. l

10. In a machine of the character described, the combination with the accumir lating, item and total printing devices, of a rst-itein d'esigii'atiner type, a hammer for the same, a catch to lhold the hammer retracted, and means controlled by the total printing devices -for displacing said catch, with provisions for interlocking ther hammer with the item-printing means.

11. In a machine of the character de` sribed, the combination with the accumulating, item and total printing devices, of a first-item designating type` a hammer for the'same, a catch to hold the hammer rctract'ed, a vibrating memberactuatcd in each totalizing operation, and a catch-controlling member itself controlled bysaid vibrating member, with provisions for interlocking the hammerwith the item-printing means.

" 12. In a machine of the character described, the combination with thev amount. types and carriers, means for setting' ii the types,`and means for taking'imprints t erefrom. of a special type for designating the first item in a list, and means for taking an imprint from said special type, with provi sionsor interlocking said means with the means for taking imprints from the amount types: substantially as and toi' the purpose described.

13. ln :in adding machine, the combination with the clearing, printing, and adding mechanisms thereof, of means for printing a suitable character when a totalis taken to distinguish it from the individual items and for automatically printing another and dift'ei'entcharacter when the machine is clear to thereby indicate that fact; substantially described.

1.4. In an adding]r machine, the combination, with the clearing, printing, and adding mechanisms thereof, of means for printing a suitable character when a total is taken to distinguish it .from the individual items and for automatically printing another and different character as an incident to the print-v ing ofthe firstitem after the machine was cleared to indicate the fact that the niachine was clear when such item was put into the machine; substantially as described.

15. In :in adding machine, the combination with clearing mechanism, ot means for printing a suitable character as an incident to the operation of clearing the machine to designate a total from the individual items and for printing another suitable distinguishing character as anincident to the operation of printing the first item after clearing t of the machine to indicate the tact that the machine was clear when that item was put into the machine; substantially as described.

16. In' an adding machine, the combination with the clearing, printing, Iand adding mechanisms thereof, of a special type bar or carrier bearing two distinguishing type characters, and means copcrating with said carrier ,to cause one of said characters to' be printed whenever the machine is operated to print a totalor clear the machine and to cause the other of said charactersto be printed whenever the machine is operated to print the iirst item put into the machine after clearingg substantially as described.

17. In an adding machine', the combination with the clearing, printing, and adding mechanisms thereof, of a special ,type bar or carrier bearing two distinguishing type characters, and means coperating with said carrier to cause one of said characters to be printed with the total and at one side thereof whenever the machine is operated to print a total and to cause the other of said characters to be printed with and at one side of tliefirst item put into 'the machine afterl f cleariiig; substantially as described.

noises? two distinguishing characters, one to indicate e total. and the other the feet that the machine was clear l When :i list or colui/nn of' items was hegnn, end ineens cooperating" With seid special type her to conse scid total character to loe printed ct one side ot' e. total and the other character to he printed stone side ot the rst item ci? column begun citer the clearing l of the machine; snhstsnte-lly as described.

19. In an fielding machine, the coinhinu` tion With the clearing,

printing", end adding mechanisms thereof, ot' e visuel indicator for indicating whether or not the machine is clear, end ineens tor automatically printing c snit-chie character to indicate the tact that the machine is cleerg substantially as described.

20. linen deling machine, the combine-- tion With the clearing, printing, end adding mechanisms thereof, of' a visuel. indicator for indicating Whether or not the machine is clear, end ineens under the control. ci? the visual indicator for automatically printing a. suitable cherecter 'to indicate the tact thet the machine is clear substantially es described.

2l. In an adding machine, the combineM tion With the clearing, printing, and adding mechanisms thereof, of a. visual indicator for indicating Whether or not the machine is cleer,andmeans under the' control of the Visual indicator and normally arranged to automatically print a suitable character to indicate the fact that the machine is clear 7, but rendered inoperative when seid visuel signal indicates non -clezn"; suhstantially es described.

22. In an adding machine, the comhinzn Ition with the clearing, printing, and adding;

mechanisms thereof, of a special printing mechanism for printing c suitable character to'indicate the fact that the machine Wes clear when s list or column of items was begun, e clear.sigi1ol device for visually indicating Whether' the machine is clear or not, and an opera-ting connectionv between said signal device and scid specie-l printing;

mechanism for controlling the letter; Suhl stantielly es described.

23. In an adding.; machine, the comhineoperation and action of the Jformer; `suhstentielly es described. y 2d. .ln en adding machine, the combine.- tion with the clearing, printing, and adding .mechanisms thereof, of special printing4 mechanism for printing e suitable character te indicate the fact that the machine .was clear when e. list or column of items Wes begun and for printing a suitable cheru zitter to distinguish the total from the individuel. item, a, clear signcl device for visually indicating Whether the machine is clear or-not, totelizingl mechanism, and en operating connection With scid special printing mechanism -finder the control of the signal device end the totelizing mecha nisin; substantially as described.

25. In en adding machine, the combine.- tion vwith the clearing, printing, and edding mechanisms thereof, of special printing mechanism for printing e suitable character to indicate the factthet the machine Wes clear when c list or column of items Wes hegun end for printing c suitable character to distinguish the total from the individual items, :t clear signal device for visually indicating Whether the machine is cleerl or not, totalizing mechanism, and an operating connection. with seid special printing mechanism under the constant and automatic control ot the signal device and under the control ot the totelizing mechanism at the will of the operator; substantially es described.

JHN P. HARRISON.

Witnesses ALVAN MAcAUnnY, H. A.. BRoWN. 

